Access to Google search results from within mainland China was blocked recently for many hours, then restored, even as the US company switched explanations for what was happening.
In the meantime, Yahoo email users in China specialising in politically sensitive material complained that their accounts had been compromised, while malicious software tried to install itself on computers in Vietnam used by critics of a Chinese mining investment in that country.
Helen Warrell talked with Joseph Menn in an FT podcast about all three developments and their possible connections.
